X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Fnet.h;h=ef9de3cad14bce2844b4f4647e0b665ab832665d;hb=2f5e5082555d262a434394fd3e77bd34aecee438;hp=23fb947292ccf3e1e1b805e86c11ac75106f3107;hpb=eecf9e2e78c3af4304740804b3649f3d4b8a922a;p=karo-tx-uboot.git diff --git a/include/net.h b/include/net.h index 23fb947292..ef9de3cad1 100644 --- a/include/net.h +++ b/include/net.h @@ -3,7 +3,7 @@ * * Copyright 1994 - 2000 Neil Russell. * (See License) - * + * SPDX-License-Identifier: GPL-2.0 * * History * 9/16/00 bor adapted to TQM823L/STK8xxL board, RARP/TFTP boot added @@ -39,7 +39,7 @@ #define PKTALIGN ARCH_DMA_MINALIGN /* IPv4 addresses are always 32 bits in size */ -typedef u32 IPaddr_t; +typedef __be32 IPaddr_t; /** @@ -78,10 +78,74 @@ enum eth_state_t { ETH_STATE_ACTIVE }; +#ifdef CONFIG_DM_ETH +/** + * struct eth_pdata - Platform data for Ethernet MAC controllers + * + * @iobase: The base address of the hardware registers + * @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env + */ +struct eth_pdata { + phys_addr_t iobase; + unsigned char enetaddr[6]; +}; + +/** + * struct eth_ops - functions of Ethernet MAC controllers + * + * start: Prepare the hardware to send and receive packets + * send: Send the bytes passed in "packet" as a packet on the wire + * recv: Check if the hardware received a packet. If so, set the pointer to the + * packet buffer in the packetp parameter. If not, return an error or 0 to + * indicate that the hardware receive FIFO is empty. If 0 is returned, the + * network stack will not process the empty packet, but free_pkt() will be + * called if supplied + * free_pkt: Give the driver an opportunity to manage its packet buffer memory + * when the network stack is finished processing it. This will only be + * called when no error was returned from recv - optional + * stop: Stop the hardware from looking for packets - may be called even if + * state == PASSIVE + * mcast: Join or leave a multicast group (for TFTP) - optional + * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux + * on some platforms like ARM). This function expects the + * eth_pdata::enetaddr field to be populated - optional + * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a + * ROM on the board. This is how the driver should expose it + * to the network stack. This function should fill in the + * eth_pdata::enetaddr field - optional + */ +struct eth_ops { + int (*start)(struct udevice *dev); + int (*send)(struct udevice *dev, void *packet, int length); + int (*recv)(struct udevice *dev, uchar **packetp); + int (*free_pkt)(struct udevice *dev, uchar *packet, int length); + void (*stop)(struct udevice *dev); +#ifdef CONFIG_MCAST_TFTP + int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join); +#endif + int (*write_hwaddr)(struct udevice *dev); + int (*read_rom_hwaddr)(struct udevice *dev); +}; + +#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops) + +struct udevice *eth_get_dev(void); /* get the current device */ +/* + * The devname can be either an exact name given by the driver or device tree + * or it can be an alias of the form "eth%d" + */ +struct udevice *eth_get_dev_by_name(const char *devname); +unsigned char *eth_get_ethaddr(void); /* get the current device MAC */ +/* Used only when NetConsole is enabled */ +int eth_init_state_only(void); /* Set active state */ +void eth_halt_state_only(void); /* Set passive state */ +#endif + +#ifndef CONFIG_DM_ETH struct eth_device { char name[16]; unsigned char enetaddr[6]; - int iobase; + phys_addr_t iobase; int state; int (*init) (struct eth_device *, bd_t *); @@ -89,7 +153,7 @@ struct eth_device { int (*recv) (struct eth_device *); void (*halt) (struct eth_device *); #ifdef CONFIG_MCAST_TFTP - int (*mcast) (struct eth_device *, u32 ip, u8 set); + int (*mcast) (struct eth_device *, const u8 *enetaddr, u8 set); #endif int (*write_hwaddr) (struct eth_device *); struct eth_device *next; @@ -97,13 +161,9 @@ struct eth_device { void *priv; }; -extern int eth_initialize(bd_t *bis); /* Initialize network subsystem */ -extern int eth_register(struct eth_device* dev);/* Register network device */ -extern int eth_unregister(struct eth_device *dev);/* Remove network device */ -extern void eth_try_another(int first_restart); /* Change the device */ -extern void eth_set_current(void); /* set nterface to ethcur var */ +int eth_register(struct eth_device *dev);/* Register network device */ +int eth_unregister(struct eth_device *dev);/* Remove network device */ -/* get the current device MAC */ extern struct eth_device *eth_current; static inline __attribute__((always_inline)) @@ -111,56 +171,19 @@ struct eth_device *eth_get_dev(void) { return eth_current; } -extern struct eth_device *eth_get_dev_by_name(const char *devname); -extern struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */ -extern int eth_get_dev_index(void); /* get the device index */ -extern void eth_parse_enetaddr(const char *addr, uchar *enetaddr); -extern int eth_getenv_enetaddr(char *name, uchar *enetaddr); -extern int eth_setenv_enetaddr(char *name, const uchar *enetaddr); +struct eth_device *eth_get_dev_by_name(const char *devname); +struct eth_device *eth_get_dev_by_index(int index); /* get dev @ index */ -/* - * Get the hardware address for an ethernet interface . - * Args: - * base_name - base name for device (normally "eth") - * index - device index number (0 for first) - * enetaddr - returns 6 byte hardware address - * Returns: - * Return true if the address is valid. - */ -extern int eth_getenv_enetaddr_by_index(const char *base_name, int index, - uchar *enetaddr); - -#ifdef CONFIG_RANDOM_MACADDR -/* - * The u-boot policy does not allow hardcoded ethernet addresses. Under the - * following circumstances a random generated address is allowed: - * - in emergency cases, where you need a working network connection to set - * the ethernet address. - * Eg. you want a rescue boot and don't have a serial port to access the - * CLI to set environment variables. - * - * In these cases, we generate a random locally administered ethernet address. - * - * Args: - * enetaddr - returns 6 byte hardware address - */ -extern void eth_random_enetaddr(uchar *enetaddr); -#endif - -extern int usb_eth_initialize(bd_t *bi); -extern int eth_init(bd_t *bis); /* Initialize the device */ -extern int eth_send(void *packet, int length); /* Send a packet */ - -#ifdef CONFIG_API -extern int eth_receive(void *packet, int length); /* Receive a packet*/ -extern void (*push_packet)(void *packet, int length); -#endif -extern int eth_rx(void); /* Check for received packets */ -extern void eth_halt(void); /* stop SCC */ -extern char *eth_get_name(void); /* get name of current device */ +/* get the current device MAC */ +static inline unsigned char *eth_get_ethaddr(void) +{ + if (eth_current) + return eth_current->enetaddr; + return NULL; +} /* Set active state */ -static inline __attribute__((always_inline)) int eth_init_state_only(bd_t *bis) +static inline __attribute__((always_inline)) int eth_init_state_only(void) { eth_get_dev()->state = ETH_STATE_ACTIVE; @@ -184,8 +207,43 @@ static inline __attribute__((always_inline)) void eth_halt_state_only(void) int eth_write_hwaddr(struct eth_device *dev, const char *base_name, int eth_number); +int usb_eth_initialize(bd_t *bi); +#endif + +int eth_initialize(void); /* Initialize network subsystem */ +void eth_try_another(int first_restart); /* Change the device */ +void eth_set_current(void); /* set nterface to ethcur var */ + +int eth_get_dev_index(void); /* get the device index */ +void eth_parse_enetaddr(const char *addr, uchar *enetaddr); +int eth_getenv_enetaddr(char *name, uchar *enetaddr); +int eth_setenv_enetaddr(char *name, const uchar *enetaddr); + +/* + * Get the hardware address for an ethernet interface . + * Args: + * base_name - base name for device (normally "eth") + * index - device index number (0 for first) + * enetaddr - returns 6 byte hardware address + * Returns: + * Return true if the address is valid. + */ +int eth_getenv_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr); + +int eth_init(void); /* Initialize the device */ +int eth_send(void *packet, int length); /* Send a packet */ + +#ifdef CONFIG_API +int eth_receive(void *packet, int length); /* Receive a packet*/ +extern void (*push_packet)(void *packet, int length); +#endif +int eth_rx(void); /* Check for received packets */ +void eth_halt(void); /* stop SCC */ +const char *eth_get_name(void); /* get name of current device */ + #ifdef CONFIG_MCAST_TFTP -int eth_mcast_join(IPaddr_t mcast_addr, u8 join); +int eth_mcast_join(IPaddr_t mcast_addr, int join); u32 ether_crc(size_t len, unsigned char const *p); #endif @@ -208,6 +266,8 @@ struct ethernet_hdr { /* Ethernet header size */ #define ETHER_HDR_SIZE (sizeof(struct ethernet_hdr)) +#define ETH_FCS_LEN 4 /* Octets in the FCS */ + struct e802_hdr { uchar et_dest[6]; /* Destination node */ uchar et_src[6]; /* Source node */ @@ -357,7 +417,7 @@ struct icmp_hdr { } echo; ulong gateway; struct { - ushort __unused; + ushort unused; ushort mtu; } frag; uchar data[0]; @@ -421,7 +481,11 @@ extern uchar NetServerEther[6]; /* Boot server enet address */ extern IPaddr_t NetOurIP; /* Our IP addr (0 = unknown) */ extern IPaddr_t NetServerIP; /* Server IP addr (0 = unknown) */ extern uchar *NetTxPacket; /* THE transmit packet */ +#ifdef CONFIG_DM_ETH +extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ +#else extern uchar *NetRxPackets[PKTBUFSRX]; /* Receive packets */ +#endif extern uchar *NetRxPacket; /* Current receive packet */ extern int NetRxPacketLen; /* Current rx packet length */ extern unsigned NetIPID; /* IP ID (counting) */ @@ -437,7 +501,7 @@ extern int NetRestartWrap; /* Tried all network devices */ enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, - TFTPSRV, TFTPPUT, LINKLOCAL + TFTPSRV, TFTPPUT, LINKLOCAL, BOOTME }; /* from net/net.c */ @@ -478,38 +542,64 @@ extern IPaddr_t Mcast_addr; #endif /* Initialize the network adapter */ -extern void net_init(void); -extern int NetLoop(enum proto_t); +void net_init(void); +int NetLoop(enum proto_t); /* Shutdown adapters and cleanup */ -extern void NetStop(void); +void NetStop(void); /* Load failed. Start again. */ -extern void NetStartAgain(void); +int NetStartAgain(void); /* Get size of the ethernet header when we send */ -extern int NetEthHdrSize(void); +int NetEthHdrSize(void); /* Set ethernet header; returns the size of the header */ -extern int NetSetEther(uchar *, uchar *, uint); -extern int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot); +int NetSetEther(uchar *, uchar *, uint); +int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot); /* Set IP header */ -extern void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source); -extern void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, +void net_set_ip_header(uchar *pkt, IPaddr_t dest, IPaddr_t source); +void net_set_udp_header(uchar *pkt, IPaddr_t dest, int dport, int sport, int len); -/* Checksum */ -extern int NetCksumOk(uchar *, int); /* Return true if cksum OK */ -extern uint NetCksum(uchar *, int); /* Calculate the checksum */ +/** + * compute_ip_checksum() - Compute IP checksum + * + * @addr: Address to check (must be 16-bit aligned) + * @nbytes: Number of bytes to check (normally a multiple of 2) + * @return 16-bit IP checksum + */ +unsigned compute_ip_checksum(const void *addr, unsigned nbytes); + +/** + * add_ip_checksums() - add two IP checksums + * + * @offset: Offset of first sum (if odd we do a byte-swap) + * @sum: First checksum + * @new_sum: New checksum to add + * @return updated 16-bit IP checksum + */ +unsigned add_ip_checksums(unsigned offset, unsigned sum, unsigned new_sum); + +/** + * ip_checksum_ok() - check if a checksum is correct + * + * This works by making sure the checksum sums to 0 + * + * @addr: Address to check (must be 16-bit aligned) + * @nbytes: Number of bytes to check (normally a multiple of 2) + * @return true if the checksum matches, false if not + */ +int ip_checksum_ok(const void *addr, unsigned nbytes); /* Callbacks */ -extern rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */ -extern void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */ -extern rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */ -extern void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */ -extern void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */ -extern void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */ +rxhand_f *net_get_udp_handler(void); /* Get UDP RX packet handler */ +void net_set_udp_handler(rxhand_f *); /* Set UDP RX packet handler */ +rxhand_f *net_get_arp_handler(void); /* Get ARP RX packet handler */ +void net_set_arp_handler(rxhand_f *); /* Set ARP RX packet handler */ +void net_set_icmp_handler(rxhand_icmp_f *f); /* Set ICMP RX handler */ +void NetSetTimeout(ulong, thand_f *);/* Set timeout handler */ /* Network loop state */ enum net_loop_state { @@ -529,6 +619,7 @@ static inline void net_set_state(enum net_loop_state state) /* Transmit a packet */ static inline void NetSendPacket(uchar *pkt, int len) { + /* Currently no way to return errors from eth_send() */ (void) eth_send(pkt, len); } @@ -542,11 +633,14 @@ static inline void NetSendPacket(uchar *pkt, int len) * @param sport Source UDP port * @param payload_len Length of data after the UDP header */ -extern int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, +int NetSendUDPPacket(uchar *ether, IPaddr_t dest, int dport, int sport, int payload_len); +#ifndef CONFIG_DM_ETH +#define NetReceive(in_packet, len) net_process_received_packet(in_packet, len) +#endif /* Processes a received packet */ -extern void NetReceive(uchar *, int); +void net_process_received_packet(uchar *in_packet, int len); #ifdef CONFIG_NETCONSOLE void NcStart(void); @@ -573,6 +667,9 @@ static inline void eth_set_last_protocol(int protocol) net_loop_last_protocol = protocol; #endif } +#ifdef CONFIG_CMD_BOOTCE +void BootmeStart(void); +#endif /* * Check if autoload is enabled. If so, use either NFS or TFTP to download @@ -674,29 +771,48 @@ static inline int is_valid_ether_addr(const u8 *addr) return !is_multicast_ether_addr(addr) && !is_zero_ether_addr(addr); } +/** + * eth_random_addr - Generate software assigned random Ethernet address + * @addr: Pointer to a six-byte array containing the Ethernet address + * + * Generate a random Ethernet address (MAC) that is not multicast + * and has the local assigned bit set. + */ +static inline void eth_random_addr(uchar *addr) +{ + int i; + unsigned int seed = get_timer(0); + + for (i = 0; i < 6; i++) + addr[i] = rand_r(&seed); + + addr[0] &= 0xfe; /* clear multicast bit */ + addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ +} + /* Convert an IP address to a string */ -extern void ip_to_string(IPaddr_t x, char *s); +void ip_to_string(IPaddr_t x, char *s); /* Convert a string to ip address */ -extern IPaddr_t string_to_ip(const char *s); +IPaddr_t string_to_ip(const char *s); /* Convert a VLAN id to a string */ -extern void VLAN_to_string(ushort x, char *s); +void VLAN_to_string(ushort x, char *s); /* Convert a string to a vlan id */ -extern ushort string_to_VLAN(const char *s); +ushort string_to_VLAN(const char *s); /* read a VLAN id from an environment variable */ -extern ushort getenv_VLAN(char *); +ushort getenv_VLAN(char *); /* copy a filename (allow for "..." notation, limit length) */ -extern void copy_filename(char *dst, const char *src, int size); +void copy_filename(char *dst, const char *src, int size); /* get a random source port */ -extern unsigned int random_port(void); +unsigned int random_port(void); /* Update U-Boot over TFTP */ -extern int update_tftp(ulong addr); +int update_tftp(ulong addr); /**********************************************************************/